CHLOM Metaprotocol — Multi-Chain Bridge & Interoperability Layer — Architecture & Implementation

This document specifies the Multi-Chain Bridge & Interoperability Layer for the CHLOM Metaprotocol, enabling seamless, secure, and verifiable transactions across Web2, Web3, multi-chain, and enterprise systems. This subsystem is a patent-pending asset of CrownThrive, LLC, and all integration, reproduction, or adaptation requires an active licensing agreement as defined on crownthrive.com.

1. Purpose & Scope

The Multi-Chain Bridge Layer serves as the connective tissue between heterogeneous blockchain networks, enterprise systems, and Web2 infrastructures, allowing CHLOM’s licensing, compliance, and governance data to flow securely across:

• EVM-compatible chains (Ethereum, Polygon, BNB Chain, Avalanche, etc.).
• Non-EVM chains (Solana, Aptos, Cosmos SDK, Substrate-based).
• Enterprise integrations via secure API gateways.
• Web2 systems requiring SSO and REST/GraphQL connectivity.

The bridge ensures:

• Cross-chain proof validation.
• Biometric + DID identity persistence across environments.
• Multi-sig (fingerprint) execution gating.
• ZK-enabled selective data transfer for privacy compliance.

2. Core Components

1. Bridge Coordinator Contract: Manages inbound/outbound asset and data transfer requests.
2. Light Client Verifiers: On-chain verification of other chain states.
3. DID & Fingerprint Binding Service: Maintains biometric-bound identity state across chains.
4. ZK Privacy Layer: Masks sensitive license metadata during transfer.
5. Relay Network: Off-chain validators relaying proofs and state changes.
6. API/SDK Connectors: Secure endpoints for Web2 and enterprise integration.

3. Data Flow

1. Action approved in CHLOM governance.
2. Compliance validation via TLAAS confirms DID, fingerprint, and license requirements.
3. Bridge Coordinator receives action payload + compliance proof.
4. Light Client Verifier checks the originating chain state.
5. Relay Network delivers signed message to target chain.
6. Target chain contract executes the mirrored action.
7. Execution proof anchored back to source chain and IPFS.

4. Solidity Bridge Coordinator

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.24;

interface ILightClientVerifier {
    function verifyProof(bytes calldata proofData) external view returns (bool);
}

contract CHLOMBridgeCoordinator {
    ILightClientVerifier public verifier;

    event BridgeAction(bytes32 indexed actionId, address targetChain, bytes payload);

    constructor(address verifierAddress) {
        verifier = ILightClientVerifier(verifierAddress);
    }

    function initiateBridge(bytes32 actionId, address targetChain, bytes calldata payload, bytes calldata proof) external {
        require(verifier.verifyProof(proof), "INVALID_PROOF");
        emit BridgeAction(actionId, targetChain, payload);
    }
}

5. Off-Chain Relay Example

const { sign } = require('crypto');
const fetch = require('node-fetch');

async function relayAction(action) {
  if (!await verifyProof(action.proof)) return false;
  const signedPayload = sign('sha256', Buffer.from(JSON.stringify(action)), privateKey);
  await fetch(action.targetChainEndpoint, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ payload: action.payload, signature: signedPayload.toString('base64') })
  });
  return true;
}

6. Security & Compliance

• Multi-sig + biometric enforcement at bridge entry and exit points.
• Replay attack prevention with nonce-based sequencing.
• Jurisdictional routing embedded in bridge transfer rules.
• End-to-end encryption for all off-chain relays.

7. Patent & Licensing Protections

This architecture, including the biometric DID persistence, multi-chain proof validation, and ZK-enabled bridge logic, is patent-pending. Unauthorized reproduction or integration without CrownThrive, LLC licensing is prohibited.

Next: CHLOM DID & Biometric Identity Layer — Unified Architecture & Lifecycle Management.